diff --git a/packages/math/src/decimal.spec.ts b/packages/math/src/decimal.spec.ts
index e8f70330..a3778391 100644
--- a/packages/math/src/decimal.spec.ts
+++ b/packages/math/src/decimal.spec.ts
@@ -34,7 +34,7 @@ describe("Decimal", () => {
 
     it("throws for atomics that are not non-negative integers", () => {
       expect(() => Decimal.fromAtomics("-1", 0)).toThrowError(
-        /invalid string format. Only non-negative integers in decimal representation supported/i,
+        "Invalid string format. Only non-negative integers in decimal representation supported.",
       );
     });
   });